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Route Reliability

Portland → Los Angeles

PDX–LAX · 833 miles · Portland International Airport to Los Angeles International Airport

91
Nerd Approved
WanderNerd Reliability Score
87%
Arrive within 15 minutes
0 min
Average arrival delay
1.0%
Cancelled
4,454
Flights in the data

Data through May 2026.

Who flies it best

Ranked by on-time arrivals. Historical results, not predictions.

  1. 1.Delta Air Lines91%1,690 flights
  2. 2.Alaska Airlines87%1,949 flights
  3. 3.Frontier Airlines82%219 flights
  4. 4.American Airlines81%596 flights

What the data says

Morning flights do better here.

PDX–LAX flights departing between 6–9 AM arrived on time 90% of the time, versus 81% between 9 PM–12 AM.

Wednesday comes out ahead.

A small edge: 91% on time on Wednesdays against 85% on Sundays.

Delta Air Lines runs this route best.

Delta Air Lines arrived on time 91% of the time on this route; American Airlines managed 81%.

Ticking up lately.

PDX–LAX flights arrived on time 89% of the time over the last three months in the data, compared with 85% in the three months before that.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon87%(700 flights)
  • Tue88%(573 flights)
  • Wed91%(570 flights)
  • Thu86%(676 flights)
  • Fri87%(672 flights)
  • Sat89%(536 flights)
  • Sun85%(682 flights)
On-time by departure window
  • 3–6 AM—(9 flights)
  • 6–9 AM90%(1017 flights)
  • 9 AM–12 PM88%(750 flights)
  • 12–3 PM88%(1064 flights)
  • 3–6 PM85%(904 flights)
  • 6–9 PM87%(406 flights)
  • 9 PM–12 AM81%(259 flights)
On-time trend by month
90%
May

Jun 86% → May 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202586%393
July 202588%399
August 202584%406
September 202593%372
October 202589%382
November 202588%363
December 202581%379
January 202688%329
February 202687%303
March 202689%362
April 202687%345
May 202690%376

Same trip, other airports

Keep nerding

Based on 4,454 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.